<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <p>实体字符用于在页面上输出一些预留字，如直接输入&#60有时可能会不合法</p>
    <p>&#169 &copy;</p>
</body>
</html>